CN109438775A - A kind of preparation method of agricultural product antimicrobial preservative film - Google Patents
A kind of preparation method of agricultural product antimicrobial preservative film Download PDFInfo
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- CN109438775A CN109438775A CN201811176585.7A CN201811176585A CN109438775A CN 109438775 A CN109438775 A CN 109438775A CN 201811176585 A CN201811176585 A CN 201811176585A CN 109438775 A CN109438775 A CN 109438775A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
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Abstract
The invention discloses a kind of preparation methods of agricultural product antimicrobial preservative film, it include: that a certain amount of chitosan is dissolved in the acetum that volume fraction is 1~3% by (1), 20~30min of heating stirring, a certain amount of sodium trimetaphosphate is slowly added dropwise again, 1~3h of cross-linking reaction obtains product A；(2) in parts by weight, weigh 30~50 parts of above-mentioned product A, 3~8 parts of nano silver antimicrobials composite titanium dioxide microballoon, degradation 1~3 part of accelerator, 5~10 parts of gelatin, 10~20 parts of oleic acid, 8~12 parts of glycerol are sequentially added, 20~30min is stirred, obtains product B；(3) by curtain coating after above-mentioned product B deaeration on poly (methyl methacrylate) plate, film is taken off in drying, then immerses 10~20min of reaction in sodium hydroxide solution, is washed to neutrality, fixed, dries, obtains antimicrobial preservative film.Antimicrobial preservative film biological safety in the present invention is high, while having preferable barrier property and anti-microbial property, and application prospect is extensive.
Description
Technical field
The present invention relates to agricultural products fresh-keeping technical fields, more particularly to a kind of preparation side of agricultural product antimicrobial preservative film
Method.
Background technique
With the raising of people's quality of life and the pursuit to health, safety and agricultural products fresh-keeping are stored to agricultural product
It is required that also higher and higher, agricultural product packaging material and preservation technology become the higher research hotspot of attention rate.Preservative film usually makes
It is made of macromolecule polymeric materials such as ethylene-vinyl alcohol copolymer, low density polyethylene (LDPE) or polypropylene, however, in use process
Middle discovery, the preservative film easy of these materials occur oxidation reaction, or bacterium mould easy to breed itself etc. with by Perserving materials, make
It is undesirable at fresh-keeping effect.
For this reason, it is necessary to can solve in view of the above-mentioned problems, propose a kind of preparation method of agricultural product antimicrobial preservative film
Certainly problems of the prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of agricultural product antimicrobial preservative film, to overcome in the prior art
Deficiency.
To achieve the above object, the invention provides the following technical scheme:
A kind of preparation method of agricultural product antimicrobial preservative film, comprising:
(1) a certain amount of chitosan is dissolved in the acetum that volume fraction is 1~3%, heating stirring 20~
30min, then a certain amount of sodium trimetaphosphate is slowly added dropwise, 1~3h of cross-linking reaction obtains product A；
(2) in parts by weight, 30~50 parts of above-mentioned product A are weighed, nano silver antimicrobials dioxide composite is sequentially added
3~8 parts of titanium microballoon, degradation 1~3 part of accelerator, 5~10 parts of gelatin, 10~20 parts of oleic acid, 8~12 parts of glycerol, stirring 20~
30min obtains product B；
(3) by curtain coating after above-mentioned product B deaeration on poly (methyl methacrylate) plate, drying takes off film, then immerse in sodium hydroxide solution
10~20min is reacted, neutrality is washed to, it is fixed, it dries, obtains antimicrobial preservative film.
Preferably, in step (1), the chitosan is Quaternary Ammonium Salt of Chitosan.
Preferably, in step (1), the concentration of chitosan-acetic acid solution is 1 × 10-4~2 × 10-4mol/L。
Preferably, in step (1), in the product A, the mass fraction of sodium trimetaphosphate is 0.1~1%.
Preferably, in step (2), in parts by weight include consisting of: A40 parts of product, nano silver antimicrobials are compound
It 5 parts of titanium dioxide microballoon sphere, degrades 2 parts of accelerator, 8 parts of gelatin, 15 parts of oleic acid, 10 parts of glycerol.
Preferably, in step (2), the degradation accelerator is bis- (4- hydroxy phenyl) propane of 2,2-.
Preferably, in step (3), the mass fraction of the sodium hydroxide solution is 1~5%.
Preferably, in step (3), the temperature of drying course is 60 DEG C.
Compared with the prior art, the advantages of the present invention are as follows: the antimicrobial preservative film biological safety in the present invention is high, simultaneously
With preferable barrier property and anti-microbial property, application prospect is extensive.
Specific embodiment
The present invention is described further by the following example: according to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific material ratio, process conditions and its result described in embodiment are only used
In illustrating the present invention, without the present invention described in detail in claims should will not be limited.
The present invention discloses a kind of preparation method of agricultural product antimicrobial preservative film, comprising:
(1) a certain amount of chitosan is dissolved in the acetum that volume fraction is 1~3%, heating stirring 20~
30min, then a certain amount of sodium trimetaphosphate is slowly added dropwise, 1~3h of cross-linking reaction obtains product A；
(2) in parts by weight, 30~50 parts of above-mentioned product A are weighed, nano silver antimicrobials dioxide composite is sequentially added
3~8 parts of titanium microballoon, degradation 1~3 part of accelerator, 5~10 parts of gelatin, 10~20 parts of oleic acid, 8~12 parts of glycerol, stirring 20~
30min obtains product B；
(3) by curtain coating after above-mentioned product B deaeration on poly (methyl methacrylate) plate, drying takes off film, then immerse in sodium hydroxide solution
10~20min is reacted, neutrality is washed to, it is fixed, it dries, obtains antimicrobial preservative film.
Wherein, in step (1), the concentration of chitosan-acetic acid solution is 1 × 10-4~2 × 10-4Mol/L, it is preferred that shell is poly-
The concentration of sweet and sour acid solution is 1.5 × 10-4Mol/L, further, the chitosan are Quaternary Ammonium Salt of Chitosan；The product A
In, the mass fraction of sodium trimetaphosphate is 0.1~1%, it is preferred that the mass fraction of sodium trimetaphosphate is 0.5%.
Wherein, in parts by weight include consisting of in step (2): A40 parts of product, nano silver antimicrobials compound two
It 5 parts of titania microsphere, degrades 2 parts of accelerator, 8 parts of gelatin, 15 parts of oleic acid, 10 parts of glycerol, further, the degradation accelerator
For bis- (4- hydroxy phenyl) propane of 2,2-.
Wherein, in step (3), the mass fraction of the sodium hydroxide solution is 1~5%, it is preferred that the sodium hydroxide
The mass fraction of solution is 2%；The temperature of drying course is 60 DEG C.
The preparation method of agricultural product antimicrobial preservative film in the present invention is illustrated with specific embodiment below.
Embodiment 1
(1) a certain amount of chitosan is dissolved in the acetum that volume fraction is 1%, heating stirring 20min, then slowly
A certain amount of sodium trimetaphosphate is added dropwise, cross-linking reaction 1h obtains the product A that mass fraction containing sodium trimetaphosphate is 0.1%,
In, the concentration of chitosan-acetic acid solution is 1 × 10-4mol/L；
(2) in parts by weight, 30 parts of above-mentioned product A are weighed, it is micro- to sequentially add nano silver antimicrobials composite titanium dioxide
3 parts of ball, degradation 1 part of accelerator, 5 parts of gelatin, 10 parts of oleic acid, 8 parts of glycerol, stir 20min, obtain product B；
(3) by curtain coating after above-mentioned product B deaeration on poly (methyl methacrylate) plate, film is taken off in drying, then immersing mass fraction is 1%
Sodium hydroxide solution in react 10min, be washed to neutrality, it is fixed, dry, obtain antimicrobial preservative film.
Embodiment 2
(1) a certain amount of chitosan is dissolved in the acetum that volume fraction is 2%, heating stirring 25min, then slowly
A certain amount of sodium trimetaphosphate is added dropwise, cross-linking reaction 2h obtains the product A that mass fraction containing sodium trimetaphosphate is 0.5%,
In, the concentration of chitosan-acetic acid solution is 1.5 × 10-4mol/L；
(2) in parts by weight, 40 parts of above-mentioned product A are weighed, it is micro- to sequentially add nano silver antimicrobials composite titanium dioxide
5 parts of ball, degradation 2 parts of accelerator, 8 parts of gelatin, 15 parts of oleic acid, 10 parts of glycerol, stir 25min, obtain product B；
(3) by curtain coating after above-mentioned product B deaeration on poly (methyl methacrylate) plate, film is taken off in drying, then immersing mass fraction is 2%
Sodium hydroxide solution in react 15min, be washed to neutrality, it is fixed, dry, obtain antimicrobial preservative film.
Embodiment 3
(1) a certain amount of chitosan is dissolved in the acetum that volume fraction is 3%, heating stirring 30min, then slowly
A certain amount of sodium trimetaphosphate is added dropwise, 1~3h of cross-linking reaction obtains the product A that mass fraction containing sodium trimetaphosphate is 1%,
In, the concentration of chitosan-acetic acid solution is 2 × 10-4mol/L；
(2) in parts by weight, 50 parts of above-mentioned product A are weighed, it is micro- to sequentially add nano silver antimicrobials composite titanium dioxide
8 parts of ball, degradation 3 parts of accelerator, 10 parts of gelatin, 20 parts of oleic acid, 12 parts of glycerol, stir 30min, obtain product B；
(3) by curtain coating after above-mentioned product B deaeration on poly (methyl methacrylate) plate, film is taken off in drying, then immersing mass fraction is 5%
Sodium hydroxide solution in react 20min, be washed to neutrality, it is fixed, dry, obtain antimicrobial preservative film.
Antimicrobial preservative film biological safety in the present invention is high, while having preferable barrier property and anti-microbial property.It is right
Preservative film in the present invention carries out the experiment of fresh-keeping and antibiotic property, the results showed that, using the preservative film in the present invention to agricultural product into
Fresh-keeping 10 days of row, the weight-loss ratio of the agricultural product are 1~1.5%, and rotten to the corn rate is 0~1 grade.It therefore deduces that, in the present invention
Antimicrobial preservative film not only has preferable fresh-keeping effect, but also has preferable anti-microbial property, and application prospect is extensive.
Finally, it is to be noted that, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.
Claims (8)
1. a kind of preparation method of agricultural product antimicrobial preservative film characterized by comprising
(1) a certain amount of chitosan is dissolved in the acetum that volume fraction is 1~3%, 20~30min of heating stirring, then
A certain amount of sodium trimetaphosphate is slowly added dropwise, 1~3h of cross-linking reaction obtains product A；
(2) in parts by weight, 30~50 parts of above-mentioned product A are weighed, it is micro- to sequentially add nano silver antimicrobials composite titanium dioxide
3~8 parts of ball, degradation 1~3 part of accelerator, 5~10 parts of gelatin, 10~20 parts of oleic acid, 8~12 parts of glycerol, stir 20~30min,
Obtain product B；
(3) by curtain coating after above-mentioned product B deaeration on poly (methyl methacrylate) plate, drying takes off film, then immerse in sodium hydroxide solution and react
10~20min is washed to neutrality, fixed, dries, obtains antimicrobial preservative film.
2. the preparation method of agricultural product antimicrobial preservative film according to claim 1, which is characterized in that in step (1), institute
Stating chitosan is Quaternary Ammonium Salt of Chitosan.
3. the preparation method of agricultural product antimicrobial preservative film according to claim 1, which is characterized in that in step (1), shell
The concentration of glycan acetum is 1 × 10-4~2 × 10-4mol/L。
4. the preparation method of agricultural product antimicrobial preservative film according to claim 1, which is characterized in that in step (1), institute
It states in product A, the mass fraction of sodium trimetaphosphate is 0.1~1%.
5. the preparation method of agricultural product antimicrobial preservative film according to claim 1, which is characterized in that in step (2), press
Include consisting of according to parts by weight meter: A40 parts of product, 5 parts of nano silver antimicrobials composite titanium dioxide microballoon, accelerator 2 of degrading
Part, 8 parts of gelatin, 15 parts of oleic acid, 10 parts of glycerol.
6. the preparation method of agricultural product antimicrobial preservative film according to claim 1, which is characterized in that in step (2), institute
Stating degradation accelerator is bis- (4- hydroxy phenyl) propane of 2,2-.
7. the preparation method of agricultural product antimicrobial preservative film according to claim 1, which is characterized in that in step (3), institute
The mass fraction for stating sodium hydroxide solution is 1~5%.
8. the preparation method of agricultural product antimicrobial preservative film according to claim 1, which is characterized in that in step (3), dry
The temperature of dry process is 60 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811176585.7A CN109438775A (en) | 2018-10-10 | 2018-10-10 | A kind of preparation method of agricultural product antimicrobial preservative film |
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| CN201811176585.7A CN109438775A (en) | 2018-10-10 | 2018-10-10 | A kind of preparation method of agricultural product antimicrobial preservative film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541977A (en) * | 2019-09-13 | 2019-12-06 | 石柳青 | Antibacterial PVC pipeline for acidic wastewater |
| CN114369258A (en) * | 2021-12-22 | 2022-04-19 | 浙江大学台州研究院 | Hydrogel composite material, preparation method and application |
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| CN106009967A (en) * | 2016-06-23 | 2016-10-12 | 黄作鹏 | Composite heat-insulating paint for exterior walls and preparation method of composite heat-insulating paint |
| CN106381089A (en) * | 2016-08-31 | 2017-02-08 | 桐乡嘉力丰实业股份有限公司 | Edible environmentally-friendly glutinous rice glue composition used for pasting wallpapers, and production method thereof |
| CN108440779A (en) * | 2018-04-13 | 2018-08-24 | 合肥金同维低温科技有限公司 | A kind of degradable type preservative film of the antibacterial of agricultural product and preparation method thereof |
-
2018
- 2018-10-10 CN CN201811176585.7A patent/CN109438775A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102504351A (en) * | 2011-11-03 | 2012-06-20 | 中山火炬职业技术学院 | Chitosan composite preservative film and preparation process thereof |
| CN106009967A (en) * | 2016-06-23 | 2016-10-12 | 黄作鹏 | Composite heat-insulating paint for exterior walls and preparation method of composite heat-insulating paint |
| CN106381089A (en) * | 2016-08-31 | 2017-02-08 | 桐乡嘉力丰实业股份有限公司 | Edible environmentally-friendly glutinous rice glue composition used for pasting wallpapers, and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541977A (en) * | 2019-09-13 | 2019-12-06 | 石柳青 | Antibacterial PVC pipeline for acidic wastewater |
| CN114369258A (en) * | 2021-12-22 | 2022-04-19 | 浙江大学台州研究院 | Hydrogel composite material, preparation method and application |
| CN114369258B (en) * | 2021-12-22 | 2023-07-25 | 浙江大学台州研究院 | Hydrogel composite material, preparation method and application |
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Application publication date: 20190308 |